%0 Journal Article %T THE CALCULATION OF THE THREE-DIMENSIONAL IRREGULAR - SHAPED COMPOSITE BEAMS USING THE DOUBLE-GRID FINITE ELEMENTS %A Matveev, A.D. %K composites, elasticity, beams, finite element method, two-grid finite elements %J Bulletin of KSAU %D 2015 %N %P 6 %I Krasnoyarsk State Agrarian University